Egbert spencer smith and john meiklejohn



(No Model.)

R. s. SMITH xv J. MEIKLEJOHN.

BOILE'R CLEANER.

Patented Dec. 6, 1887.

Eli/9.1.

ATTORNEYS.

WITNESSBS 2 UNITED STATES PATENT FFICE.

ROBERT SPENCER SMITH AND JOHNMETKLEJOHN, OE sT. THOMAS,

ONTARIO, i

O ANADA.

BOILER-CLEANER.

SPECIFICATION forming part of Letters Patent No.v 374,502, dated December 6, 1887.

Application filed October 12, 1885. Serial No. 216,081. (No model.) Patented in Canada July 16. 1886, No. 24,501'.

To all whom it may concern:

Be it known that we, ROBERT SPENCER SMITH and JOHN MEIKLEJOHN, subjects of the Queen of Great Britain and Ireland, at present residing at St.Thomas, in the Province of Ontario, Canada, have invented a new and useful Improvement in Boiler-Cleaners, of which the following is a specification.

This invention is an improved cleaner for the tubes of tubular boilers; and it consists in certain features of construction and novel combinations of parts, as will be described and claimed.

y In the drawings, Figure'l is a longitudinal section of a boiler provided with our improvements. Fig. 2 is a cross-section of the same. Fig. 3 is a detail View of the threaded plug. Fig. 4 is a detail view of one of the cutters, and Fig. 5 is a detached section showing the plug flue-plate and one of the carrier-plates, as when the boiler is in use.

The boiler A may be of ordinary construction, having a flueplate, B, separating the smoke-box C from the flue or tube chamber D. The tubes or flues E may also be of ordinary construction. On these tubes we arrange tubular or substantially tubular cutters F, having a cutting-edge,f, at one end. Manifestly both ends of the cutter may be edged, if desired. In the construction shown a number of these cutters are secured to plates G, and by preference a number-usually threeof such plates are used for each boiler.

The special construction of the cutters is most clearly shown in Fig. 4. Each cutter has a fixed flange,f, at its rearend, and a flange, f2, in front ofand separated from the ilangef, forming between them a groove, f, in which the plate G is held.

In practice the critters are made with flange f and are inserted through the openings in the plate G. The collar or flange f2 is then heated and placed when hot ou the cutter on the side of plate G opposite llangef, and after it has cooled such flange f2 will tit tightly on the 45 These plates have open-` plate, and may have suitable hand-holds, h, as v shown. By means of the rods the plates and their cutters may be moved along the tubes, and the latter be cleaned of all accumulation of all corrosive deposits, sediment, and the like.

To close the openings in the ilue-plate, and for the further purpose presently described, we employ the plugs I, having portions 1, tted to close the openings in the flue-plate, and portion 2, threaded to enter the openings in the carrier-plates and secure the latter close up against the flue-plate when the boiler is in use. Thus it will be seen when the boiler is not in use the plugs may be removed, the handle -rod passed through the openings in the flueplate and threaded into thoseof the carrier-plates, and the latter with the cutter be moved along the tubes for the desired purpose.

It may be stated that by preference the cutters are secured loosely to the carrierplates to enable them to adjust to slight irregularities in the tubes. This is preferably effected by providing the cutters with annular circumferential grooves, in which the carrier-plates are secured, as shown most clearly in Figs. 4 and 5.

In the construction shown the carrier-plates and their attachedcutters constitute the cleaner proper, and such construction', as well as the other construction shown, is preferred; but manifestly it would involve no departure from the broad principles ofthe invention to employ detached cutters for each tube and to operate the same independently.

Having thus described our invention, what we claim as new is 1. In al boiler-cleaner, a flue-cleaner coning the cleaner plate or carrier, substantially sisting of a. tube having a sharpened edge or as set forth.

end and provided with an annular circum- ROBERT SPENCER SMITH. ferential groove, combined with the carrier- JOHN MEIKLEJOHN. 5 plate held in said groove, substantially as set Witnesses to the signature of Robert S.

forth. Smith:

2. The combination, with the boiler-flue A. T. FLICKINGER, plate having a perforation, ofthe cleaner plate F. GLOE.

or carrier having a threaded opening in line Witnesses to the signature of John Meiklelo With the opening of the flue-plate, and the plug john:

having a portion fitting the opening of the EDWIN WARE, flue-plate, and a threaded portion for enter- CHARLES HANKINSON. 

